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Feasibility study of the potential use of chemistry based emission predictions for real-time control of modern diesel engines

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  • Aithal, S.M.
  • Upadhyay, D.

Abstract

The feasibility of using chemical kinetics-based prediction of emission species for real-time control of modern diesel engines is investigated. A previously developed fast, physics-based model is used as a representative example. The temporal variation of temperature required for the computation of the reaction rate constants is obtained from the solution of the energy equation. The effects of composition and temperature on the thermo-physical properties of the working fluid are included in the computations. Issues relating to model complexity, computation time, and fidelity are discussed in the context of both equilibrium and finite rate chemistry for use in the real time environment. The set of model inputs and tunable parameters is assessed for real-time use against the standard sensor set available on modern diesel engines. Results show that use of physics-based quasi-dimensional models is promising but may need complex variable mappings for real-time application.

Suggested Citation

  • Aithal, S.M. & Upadhyay, D., 2012. "Feasibility study of the potential use of chemistry based emission predictions for real-time control of modern diesel engines," Applied Energy, Elsevier, vol. 91(1), pages 475-482.
    • Handle: RePEc:eee:appene:v:91:y:2012:i:1:p:475-482
    DOI: 10.1016/j.apenergy.2011.10.005
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    References listed on IDEAS

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    1. Aithal, S.M., 2010. "Modeling of NOx formation in diesel engines using finite-rate chemical kinetics," Applied Energy, Elsevier, vol. 87(7), pages 2256-2265, July.
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    Cited by:

    1. Asprion, Jonas & Chinellato, Oscar & Guzzella, Lino, 2013. "A fast and accurate physics-based model for the NOx emissions of Diesel engines," Applied Energy, Elsevier, vol. 103(C), pages 221-233.

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